Commercial HVAC Services in Nassau County, NY

Commercial HVAC Services Nassau County NY TFOBrienBusinesses and organizations have special concerns when it comes to their cooling and heating needs. Do you need commercial HVAC services for your Nassau County, NY business or organization, but can’t afford a lot of downtime? Then you’ll be glad to know that T.F. O’Brien is only a phone call away. We’ve been the area’s most trusted name in commercial HVAC since 1934. We have the experience needed to keep you, your employees and your clients comfortable.

Get Started with an Estimate

Call T.F. O'Brien Cooling & Heating at (516) 488-1800 or complete our short form below and a representative will reach out to you.

Please briefly describe your HVAC needs:

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What do our customers think of us?

Google Star Rating 4.8
71 reviews
Google Star Rating 4.6
329 reviews

The New A/C is Wonderful

Excellent service from beginning to end. The new A/C is wonderful.


Installation was First Rate and Professional

Tom did a great job. Got 5 other estimates: one did not respond, another sent a proposal via email which I could either accept or decline with no questions entertained. We had a special situation and only Tom was able to understand it and figure out a way to do the job. We're very happy with our new Daikin unit-operates exactly like Tom said it would. The installation was first rate and professional as well. Would certainly recommend.


Very Happy with Your Work

Very happy with your work, just very happy I haven't had to use it yet due to cool weather.


Installed as Promised in a Very Timely Fashion

The customer service has been excellent. It's been extremely easy to schedule the consultation, installation and follow-up service. Everything was delivered and installed as promised in a very timely fashion. I've been extremely happy with the level of communication from your company. When I'm ready to have the next phase of my HVAC system installed I'm definitely coming back!


Very Pleased

Very pleased to date!


Always a Pleasure

Always a pleasure.


Excellent Job / Excellent Service

Excellent job/excellent service as always. Thank you.


Professional, Courteous, and Likeable

Professional, courteous, and likeable.


Outstanding Service

Outstanding service.


We offer complete commercial HVAC services to our Nassau County, NY clients.

The comfort of you, your employees and your clients is always our number one priority. That’s why we offer comprehensive commercial HVAC services to our Nassau County, NY clients, including:

tfo areas served

Besides providing comprehensive commercial HVAC services in Nassau County, NY, T.F. O’Brien is also pleased to offer our services to these regions as well:

When you need commercial HVAC services for your Nassau County, NY business or organization, the solution is simple – just contact T.F. O’Brien at 516.488.1800 or fill out the convenient contact form below, and we’ll be happy to help.